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In the following example, color is an array and may be used in many
places, inside or outside the loops.
y=MACD();g=Signal();L1=LastValue(Cum(1));
Plot(g,"",2,1);
Color=IIf(y>g,colorBrightGreen,colorRed);
Plot(y,"",Color,1);
for(i=L1-100;i<L1-1;i++)
{x1[i]=i;y1[i]=y[i];x2[i]=i+1;y2[i]=g[i+1];
Plot(LineArray(x1[i],y1[i],x2[i],y2[i],0),"",color,1);
}
I hope it helps.
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
wrote:
> It is possible to have an array for color without this a[0].
> a[0] has a unique meaning in AFL, we can not change it [and there
is
> no reason to change it]
> It is better to ask your specific question in details [if
possible],
> I have no doubt we shall find a solution.
> BTW, the convex/concave thread is not over yet, IŽll be back when
> some theories give some money, this is the point I feel good.
> Thank you for your analytic reply.
> Dimitris Tsokakis
>
> --- In amibroker@xxxxxxxxxxxxxxx, bromba <bromba@xxxx> wrote:
> > hello Dimitris,
> >
> > DIMITRIS TSOKAKIS wrote:
> > > Well, I see now, you want a superArray A with elements a0=H,
> a1=L,
> > > a2=C, a3=O etc.
> > > [I don't write a[0] because it has already another AFL meaning]
> > > Select say ^NDX, Run for all quotations the
> > > for(i=0;i<4;i++)
> > > {
> > > x=IIf(i==0,H,IIf(i==1,L,IIf(i==2,C,O)));
> > > AddToComposite(x,"~"+WriteVal(i,1.0),"C");
> > > Buy=0;
> > > }
> > > and then, in your IB paste the
> > >
> > > x="";g=0;
> > > for(i=0;i<4;i++)
> > > {
> > > x="~"+WriteVal(i,1.0);
> > > g=Foreign(x,"C");
> > > Plot(g,"a"+WriteVal(i,1.0),1,1);
> > > }
> > > All your ai will be there.
> > > May I ask the use of this procedure ?
> > > Dimitris Tsokakis
> >
> > probably the code I'd provided caused this embarasment:
> >
> > function fArrayInArray() {
> > local arrA, arrB, arrC; //1
> > for(i=0;i<BarCount;i++) arrA[i] = Close[i]; //2
> > for(i=0;i<BarCount;i++) arrB[i] = High[i]; //3
> > arrC[0] = arrA; //4
> > arrC[1] = arrB; //5
> > return arrC; //6
> > }
> > arrD = fArrayInArray();
> >
> > this code was just for exemplification purposes. I created it
just
> to
> > express what I mean from the point of view of AFL programming,
and
> it is
> > not connected with any market strategy or whatsoever. I wanted to
> > emphasize that looping within lines two and three is their
> important
> > part but the body of each loop contains something different. in
> fact it
> > would be sufficient to write:
> >
> > arrA = Close; //2
> > arrB = High; //3
> >
> > without looping. the crucial part is creating another array
(here:
> arrC)
> > that has only two elements. but these two elements are also
arrays
> > (here: arrA=Close and arrB=High). I wanted to write a function
that
> > would return such a hybrid so that later I could write:
> >
> > Plot(arrD[0], "", colorRed);
> >
> > which would plot Close array in this case.
> >
> > Tomasz pointed out that in native AFL it is not possible. my
> attempt to
> > do this was because there are programming languages in which such
a
> > structure is possible.
> >
> > the real problem I wanted to solve was the workaround for AB4.40
to
> plot
> > daily moving averages on intraday charts. it is solved now. then
I
> > started to think if it would be possible to create
multidimensional
> > array in order to incorporate convex and concave idea you
presented
> here
> > some time ago and which I liked very much.
> >
> > The real function I wanted to write would accept intraday Close
> array,
> > compute daily moving average array, compute convex/concave stuff
> for the
> > latter, evaluate Color array and return hybrid of these arrays as
> one
> > array (properly distributed through intra bars) so that I could
> write:
> >
> > Plot(arrD[0], "daily MA", arrD[1]);
> >
> > which would plot daily moving average arrD[0] with color
described
> in
> > arrD[1].
> >
> > but it is impossible with native AFL. well, I don't know AFL very
> much.
> > I play with it, I have fun and learn sometimes by trying to
figure
> out
> > its possibilities comparing to other programming languages. it
was
> just
> > out of couriosity..
> >
> > best regards,
> > BM
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